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LTC3250ES6-1.5

Description
Charge Pump STPDN 1.5V 250mA 6-Pin TSOT-23
File Size334KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Download user manual Parametric Compare View All

LTC3250ES6-1.5 Overview

Charge Pump STPDN 1.5V 250mA 6-Pin TSOT-23

LTC3250ES6-1.5 Parametric

Parameter NameAttribute value
EU restricts the use of certain hazardous substancesNot Compliant
ECCN (US)EAR99
Part StatusUnconfirmed
SVHCYes
SVHC Exceeds ThresholdYes
FunctionStep Down
Output TypeFixed
Output Voltage (V)1.5
Minimum Operating Supply Voltage (V)3.1
Maximum Operating Supply Voltage (V)5.5
Maximum Supply Current (mA)0.06
Output Current (mA)250
Switching Frequency (kHz)1800
Efficiency (%)81
Minimum Operating Temperature (°C)-40
Maximum Operating Temperature (°C)85
Supplier Temperature GradeExtended
Pin Count6
Standard Package NameSOT-23
Supplier PackageTSOT-23
MountingSurface Mount
Package Height0.9(Max)
Package Length2.9
Package Width1.75(Max)
PCB changed6
Lead ShapeGull-wing
LTC3250-1.5/LTC3250-1.2
High Efficiency, Low Noise,
Inductorless Step-Down
DC/DC Converter
FEATURES
s
s
s
s
s
s
s
s
s
s
s
s
s
DESCRIPTIO
2.7V to 5.5V Input Voltage Range
No Inductors
Li-Ion (3.6V) to 1.5V with 81% Efficiency
Low Noise Constant Frequency Operation
Output Voltages: 1.5V
±4%,
1.2V
±4%
Output Current: 250mA
Shutdown Disconnects Load from V
IN
Low Operating Current: I
Q
= 35µA
Low Shutdown Current: I
SD
< 1µA
Oscillator Frequency = 1.5MHz
Soft-Start Limits Inrush Current at Turn-On
Short-Circuit and Overtemperature Protected
Low Profile (1mm) SOT-23 Package
The LTC
®
3250-1.5/LTC3250-1.2 are charge pump step-
down DC/DC converters that produce a 1.5V or 1.2V
regulated output from a 2.7V to 5.5V input. The parts use
switched capacitor fractional conversion to achieve typi-
cal efficiency two times higher than that of a linear regu-
lator. No inductors are required.
A unique constant frequency architecture provides a low
noise regulated output as well as lower input noise
than conventional charge pump regulators.* High
frequency operation (f
OSC
= 1.5MHz) simplifies filtering
to further reduce conducted noise. The part also uses
Burst Mode
®
operation to improve efficiency at light loads.
Low operating current (35µA with no load, <1µA in
shutdown) and low external parts count (three small
ceramic capacitors) make the LTC3250-1.5/LTC3250-1.2
ideally suited for space constrained battery powered appli-
cations. The parts are short-circuit and overtemperature
protected, and are available in a low profile (1mm) 6-pin
ThinSOT
TM
package.
, LTC and LT are registered trademarks of Linear Technology Corporation
Burst Mode is a registered trademark of Linear Technology Corporation
ThinSOT is a trademark of Linear Technology Corporation.
*U.S. Patent #6, 411, 531
APPLICATIO S
Handheld Computers
s
Cellular Phones
s
Digital Cameras
s
Handheld Medical Instruments
s
Low Power DSP Supplies
s
TYPICAL APPLICATIO
1µF
Efficiency vs Input Voltage
(I
OUT
= 100mA)
100
90
80
70
EFFICIENCY (%)
Li-Ion to 1.5V Output with Shutdown
60
50
40
30
20
10
LDO
V
IN
3.2V TO 4.2V
Li-Ion
1µF
C
V
IN
C
+
V
OUT
4.7µF
V
OUT
= 1.5V
±
4%
100mA
LTC3250-1.5
OFF ON
SHDN
GND
3250 TA1a
0
3.0
U
LTC3250-1.5
3.5
4.0
4.5
V
IN
(V)
5.0
5.5
3250 TA01b
U
U
3250fa
1

LTC3250ES6-1.5 Related Products

LTC3250ES6-1.5 LTC3250ES6-1.2#TRPBF LTC3250ES6-1.5#PBF LTC3250ES6-1.5#TRMPBF LTC3250ES6-1.5#TRPBF
Description Charge Pump STPDN 1.5V 250mA 6-Pin TSOT-23 Charge Pump STPDN 1.2V 250mA 6-Pin TSOT-23 T/R Charge Pump STPDN 1.5V 250mA 6-Pin TSOT-23 T/R Charge Pump STPDN 1.5V 250mA 6-Pin TSOT-23 T/R Charge Pump STPDN 1.5V 250mA 6-Pin TSOT-23 T/R
EU restricts the use of certain hazardous substances Not Compliant Compliant Compliant Compliant Compliant
ECCN (US) EAR99 EAR99 - EAR99 EAR99
Part Status Unconfirmed Active Unconfirmed Active Active
Function Step Down Step Down Step Down Step Down Step Down
Output Type Fixed Fixed Fixed Fixed Fixed
Output Voltage (V) 1.5 1.2 1.5 1.5 1.5
Minimum Operating Supply Voltage (V) 3.1 2.7 3.1 3.1 3.1
Maximum Operating Supply Voltage (V) 5.5 5.5 5.5 5.5 5.5
Maximum Supply Current (mA) 0.06 0.06 0.06 0.06 0.06
Output Current (mA) 250 250 250 250 250
Switching Frequency (kHz) 1800 1800 1800 1800 1800
Efficiency (%) 81 81 81 81 81
Minimum Operating Temperature (°C) -40 -40 -40 -40 -40
Maximum Operating Temperature (°C) 85 85 85 85 85
Supplier Temperature Grade Extended Extended Extended Extended Extended
Pin Count 6 6 6 6 6
Standard Package Name SOT-23 SOT SOT SOT SOT
Supplier Package TSOT-23 TSOT-23 TSOT-23 TSOT-23 TSOT-23
Mounting Surface Mount Surface Mount Surface Mount Surface Mount Surface Mount
Package Height 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max) 0.9(Max)
Package Length 2.9 2.9 2.9 2.9 2.9
Package Width 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max) 1.75(Max)
PCB changed 6 6 6 6 6
Lead Shape Gull-wing Gull-wing Gull-wing Gull-wing Gull-wing
HTS - 8542.39.00.01 8542.39.00.01 8542.39.00.01 8542.39.00.01
Packaging - Tape and Reel Tape and Reel Tape and Reel Tape and Reel
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